Radio Broadcast Networks enable Broadband Internet Access for Mobile Users

The ongoing propagation of Internet information services like WWW increases the desire for broadband multimedia information and communication services also for mobile users. Therefore wireless transmission media with high bandwidth for data services are needed. Currently used systems like GSM or even the future UMTS are lacking in bandwidth and flexibility for the effective provision of broadband data services. As a large part of the Internet traffic consists of frequent user access to only a few sources, broadcast radio networks could fill the bandwidth gap and enable broadband multimedia information services for a large number of mobile users. The new arising digital radio and television broadcast networks like DVB (Digital Video Broadcast) and DAB (Digital Audio Broadcast) seem to be well suited for our presented system concept as they provide sufficient bandwidth and the ability to integrate data casting into the program streams. Completed with an upstream interaction channel, e. g. via GSM, this system can be expanded to a fully interactive Internet access for mobile users.